Computing-scale.



. I Patented Dec. 2,- I902. W. F. STIMPSON.

COMPUTING SCALE.

(Application filed. July 1, 1901.)

2 Sheat-Sheet L (No Model.)

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w w W No. 7l5,|72. I Patented Dec. 2, 1902.

W. F; STIMPSON.

COMPUTING SCALE.

(Application filed July 1, 1901.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES.

PATENT OFFICE.

\VALTER F. STIMPSON, OF DETROIT, MICHIGAN.

COMPUTING-SCALE.

SPECIFICATION forming part of Letters Patent No. 715,172, dated December2 1902.

Application filed July 1,1901. Serial No. 66.662- (No model.)

To all whom, it may concern:

Be it known that I, WALTER F. STIMPsoN, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvementsin Computing-Scales, ofwhich the following is a specification, reference being bad therein tothe accompanying drawings.

The invention relates to computing-scales of that class in which thecomputations are arranged upon a rotatable cylinder which is actuated bythe movement of the scale-platform.

It is the object of the present invention to obtain a construction whichis especially adapted for a counter-scale and in which thecomputing-cylinderis convenientlyarranged.

It is a further object to obtain a simple construction to build which isaccurate in its indications of weight and price.

The invention consists in the construction as hereinafter described andclaimed.

In the drawings, Figure 1 is a side elevation, partly in longitudinalsection, of the scale. Fig. 2 is a perspective View of the beamdetached. Fig. 3 is a cross-section on line m :r, Fig. 1; and Fig. 4 isan enlarged section on line {1 y, Fig. 1.

A is a suitable base or frame for supporting the operating parts. Thisbase is provided with a standard B, in which the beam 0 is fulcrumed.Supported upon one end of this beam is a weighing-platform D, which isprovided with a downwardly-extending shank E, entering an aperturedstandard in the base A and suitably guided, as by a pivotal link. Thatarm of the beam 0 upon the opposite side of the fulcrum from theplatform D is preferably of greater length and is connected at its freeend with a suitable counter tension device, such as the spring G. Theposition of this spring may be adjusted by connecting it with a threadedshank H, which passes through the top of the base and has anadjusting-nut I thereon within the base.

J is a dash-pot arranged upon the base and having its movable plunger a,pivotally connected with the beam 0, thereby serving to retard theoscillations of said beam.

Adjacent to the beam 0 is arranged a computing-cylinder K. Thiscylinder, as shown,

is rotatable about a horizontal axis and is j ournaled in suitablebearings upon the base. At one end it is connected with a pinion L,which is arranged adjacent to the free end of the beam 0.

M is a rack connected to the beam and engaging with a pinion L, thearrangement being such that the movement of the beam will actuate saidrack to rotate the pinion and the computing-cylinder.

In order to provide a convenient arrangement for the computing-cylinderin relation to the beam, I preferably form the latter as shown in Fig. 2of the drawings, and consisting of an open frame, the side members Z)thereof being arranged upon opposite sides of said cylinder. 0represents the fulcrum-pivots, which are preferably secured to the sidebars b, and d represents arms extending from one end of the frame andcarrying pivots e, which support the platform. The opposite end barf ofthe open frame has centrally connected thereto an arm g, to which thespring G and plunger CL of the dash-pot are secured.

h is a finger projecting inwardly from the barf, to which a rack-bar Mis secured, preferably with a nniversaljoint, comprising the link 11,pivotally connected at its opposite ends to said finger h and rack-barin transverse planes. The rack-bar is thus free to maintain thisengagement with the pinion L during the oscillation of the beam and maybe held in engagement by any suitable means, such as a springj.

The cylinder K is arranged upon the base, so as to be surrounded by thebeam, as above described, and is provided with the compucations incircumferential rows.

N is a casing covering the cylinder K and provided on one side with alongitudinal slot is. The units of price are arranged upon the casingadjacent to this slot and in connection with their corresponding rows ofcomputations upon the cylinder. The weight-indications are preferablyarranged at one or both ends of the cylinder and may be observed throughthe slot 7c. The opposite side of the casing N is also preferablyprovided with a slot or window n, through which reverseweight-indications on the cylinder may be observed by the purchaser.

The beam 0 is preferably provided with a tare-beam O, as shown in Fig.2, which may be secured at one side of the open frame and is providedwith an adjustable poise Q.

In operation the movement of the beam 0 will be resisted by the spring Guntil a balance is established, while this movement in turn will betranslated into rotary movement of the computing-cylinder through therackand-pinion connection, which indicates the weight and price.

It is obvious that any suitable tension device may be employed in placeof the spring G which will resist the movement of the beam, so as tobalance the variable weight on the platform.

What I claim as my invention is- 1. In a scale, the combination with abase, of a horizontal computing-cylinder journaled on said base, a beamextending longitudinally in adjacence to said cylinder, a pinionconnected to one end of said cylinder, a vertically-arranged rack-barmeshing therewith and connected to one end of said beam, aweighing-platform connected to the opposite end of said beam, and aspring for resisting the movement of said beam.

2. In a scale, the combination with a base, of a horizontalcomputing-cylinder jonrnaled thereon, a beam arranged longitudinally ofand in adjacence to said cylinder, a pinion at one end of said cylinder,a vertically-arranged rack-bar in mesh with said pinion, auniversal-joint connection between said rackbar and one end of saidbeam, a weighingplatform at the opposite end of said beam and a countertension device for resisting the movement of said beam.

3. In a scale, the combination with a base,

one end of said cylinder, a weighing-spring connected to the oppositeend of said beam for resisting the movement thereof, avertically-arranged rack-bar pivotally connected to said beam and apinion connected to said cylinder in mesh therewith and a poise ad justable upon said beam.

4. In a scale, the combination with a base of a computing-cylinderrotatively mounted thereon, a beam fnlcrumed upon said base having aportion thereof bifurcated to embrace said cylinder, a weighing-platformconnected to one end of said beam, at one end of said cylinder, a pinionconnected to the opposite end of said cylinder, a rack-bar connected tosaid beam engaging said pinion and a spring for resisting the movementof said beam.

5. In a scale, the combination with a computing-cylinder having asubstantially hori zontal axis of rotation, of a weighing-platformarranged at one end of said cylinder, a beam supporting said platformembracing said cylinder and extending to the opposite end thereof, anactuating connection at the latter end of said beam between the same andsaid cylinder, and a counter tension device for resisting the movementof said beam.

In testimony whereof I affix my signature in presence of two witnesses.

WALTER F. STIMPSON.

Witnesses:

M. B. ODOGHERTY, H. 0. SMITH.

